Welcome to the life of the is220d owner.
I had one of these from 2015 until 2020. Pros the car looks good nice place to sit and comfortable seat. And not a bad looking car.
the cons this where I could list a long list.
the engine 2.2 diesel never survived the transition from front wheel to rear wheel drive.
secondly the engine suffers with terrible EGR issues or carbon related issues. Which in tune can cause a loss of power.
it spent more time with the mechanic then driving come through end. If anyone wants a Lexus buy the original is200 or the is250.
best thing I ever did last year was get rid of it for a more reliable and economical car. These cars are money pits. Best avoided along by with the disappointment etc. Best thing I ever did was trade it in last year.